| 11. | A " Delta " type trailing truck, fabricated using a one-piece casting by Commonwealth Steel Co.
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| 12. | The following January, it was back in the shop to receive a booster engine on its trailing truck.
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| 13. | Even the pilot wheels and trailing truck were removed, making it an oversized 0-8-0.
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| 14. | The two wheel trailing truck enabled the fitting of a wide firebox, necessary for a coke burning locomotive.
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| 15. | This necessitated the addition of a trailing truck to support the additional weight at the rear end of the locomotive.
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| 16. | The successful design of a trailing truck with the firebox mounted behind the driving wheels had not yet been developed.
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| 17. | A Berkshire type was the first of the booster on the trailing truck, roller bearings, and so forth.
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| 18. | In addition to supporting the very large firebox and grate, the four-wheeled trailing truck carried the ash pan.
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| 19. | A much larger cab was fitted, and a fuel bunker and water tank behind the cab, supported by a trailing truck.
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| 20. | It still betrayed its foreign heritage by lacking the PRR trademark Belpaire firebox and by having a booster engine on the trailing truck.
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